atcomsystems.ca/forum Forums Wiring - Telecom Carriers - Trunks & Services Cabling Telephones Systems Wiring Common Cable Failures... and splices

I was wondering what cable failures/miswires most of you see on a regular basis.

Also, splicing was brought up on another topic, so I was wondering what splices are best when needed and the advantages/disadvanges of them.

Jack

Oops. Jumped to wrong post.

Took care of it for you.

Search "beans" in the general forum to see a couple of discussion on connectors, but please don't post as they are old topics.

Most miswires are split pairs failures opens. You see a lot of reversals, but they really don't cause problems, just not right.

I use scotchloks and 709 splices. I don't like beanies and have had issues with them in the past.
The 709 splices take a whole pair and crimp with standard pliers. Ed mentioned that you also can re-use them but I've not tried.

I'm unfamiliar with 709 splices Could you elaborate, Jeff?

Am I wrong in thinking a scotchlok is, in some ways, better than a regular connection? They lock down on the wire, and the gel inside would prevent corrosion, whereas a say a 66 block is open to the atmosphere. Not that I'll use beanies in place of a 66 block of course...

Bill, I'm surprised by your answer. In two years I've come across almost every kind of failure except for split pairs. Come to think of it, I've never seen that particular miswire.

Reversals don't work with data wiring, do they? If someone punches down orange/white /white orange (reversed) on pins 1 and 2 (568b), data does not flow. Am I right?

I see lots of opens, and 80% of the time it is at the jack end. The other 20% is just oddball things, like 5/8 shorted, 7/8 open, 6 open, 4/5 reversed, etc.

If repulling home runs is not an option, I've used these , or something similar, for splicing data lines. Is this correct, or is there a better way to do it?

Jack

reversing the orange and white won't stop data, Transposing 1,2 & 3,6 would. I wasn't thinking the 8pins I was thinking more punch block and splices because of your combined question. So I probably would have made those separate topics.

Wiring standards and what connectors to use in a splice really have nothing to do with each other.

Looks like everthing your referring to has to do with networking..so that's a whole other issue. Yes those junction splices are good and work well, you don't bean, scotchlock, amp or use other connectors on network cable. It might work, but it's not the standards. Sorry for misunderstanding your question.

Don't forget most of us are phone guys first.

I used B-Connectors (Beanies) for many years and didn't have problems with them. I used the proper tool (D-Connector Presser) and did NOT strip the wire before inserting them. Most of the problems I saw were from people that stripped the wiring first or tried crimping them with the back of their pliers.

I like the Scotch UG/UR/UY series of splices (again, use the right tool)

I used Picabond two or three times (with the "Gatling Gun" and liked them.

I used 3M MS2 (squared) and didn't care for them. I thought they made a splice so big that you needed a garbage pail to cover it.

Sam

Good Sam, at least I wasn't the only one.

Here is a picture:

Oooh, sorry Bill. I would have made separate threads as there are two topics here, but I didn't want to 'flood' the forum with new topics. Beware the newbie!

To stick with common cable failures, I get that you are saying miswiring +/- on data will still work, so long as you aren't wired 568a on one end and 568b on the other (except where crossover cables are required). If it does work, it will still fail a certification, and it's still wrong.

Jack